TY - GEN
T1 - Wavelet-based method for fouling detection using ultrasonic guided waves
AU - Silva, J. J.
AU - Silva, K. M.
AU - Lima, A. M.N.
AU - Neto, J. S.Rocha
PY - 2006
Y1 - 2006
N2 - Fouling detection is a relevant problem for chemical, oil, food and pharmaceutical industries. Fouling consists of the deposition of heavy organic materials and other dissolved solids or in suspension in fluid transport system. The ultrasonic guided waves present specific characteristics and have demonstrated good results in detection of flaws in pipelines. In this paper, the application of wavelet transform to analyze ultrasonic signals in order to detect fouling in pipelines is presented. A platform of tests has been used to emulate the fouling problem. The pipelines were used as a medium to guide ultrasonic waves and weekly measurements were used to observe the fouling process. The Daubechies 4 and Haar wavelets were applied to each measurement set. The results reveal that the variations of the energy-spectrum of the wavelet detail coefficients may provide an appropriate way to detect fouling, since it was observed that the increase of the fouling causes a notable reduction in the energy values.
AB - Fouling detection is a relevant problem for chemical, oil, food and pharmaceutical industries. Fouling consists of the deposition of heavy organic materials and other dissolved solids or in suspension in fluid transport system. The ultrasonic guided waves present specific characteristics and have demonstrated good results in detection of flaws in pipelines. In this paper, the application of wavelet transform to analyze ultrasonic signals in order to detect fouling in pipelines is presented. A platform of tests has been used to emulate the fouling problem. The pipelines were used as a medium to guide ultrasonic waves and weekly measurements were used to observe the fouling process. The Daubechies 4 and Haar wavelets were applied to each measurement set. The results reveal that the variations of the energy-spectrum of the wavelet detail coefficients may provide an appropriate way to detect fouling, since it was observed that the increase of the fouling causes a notable reduction in the energy values.
UR - https://www.scopus.com/pages/publications/47249088737
U2 - 10.1109/ULTSYM.2006.97
DO - 10.1109/ULTSYM.2006.97
M3 - Conference contribution
AN - SCOPUS:47249088737
SN - 1424402018
SN - 9781424402014
T3 - Proceedings - IEEE Ultrasonics Symposium
SP - 444
EP - 447
BT - 2006 IEEE International Ultrasonics Symposium, IUS
T2 - 2006 IEEE International Ultrasonics Symposium, IUS
Y2 - 3 October 2006 through 6 October 2006
ER -